Making method of ultrahigh molecular weight polyethylene colored fibers

An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of adding pigments in single-component polyolefin rayon filament, spinning solution, etc., can solve the problem of poor mutual solubility of inorganic pigments and spinning dope, increase the difficulty of cleaning the stirring tank, Non-uniform color of colored fibers, etc., to achieve good mutual solubility, long color fastness, and prevention of coagulation and residue.

Inactive Publication Date: 2015-12-09
杭州翔胜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fiber coloring process has extremely high pollution to the stirring tank, which increases the difficulty of cleaning the stirring tank. At the same time, due to the poor miscibility between the inorganic pigment and the spinning stock solution, the colored fiber produced is prone to uneven color The phenomenon

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0023] The invention provides a preparation method of ultra-high molecular weight polyethylene colored fiber, comprising:

[0024] a. The organic pigment solution and the ultra-high molecular weight polyethylene fiber spinning stock solution are blended and extruded in a twin-screw extruder, and spun to form jelly collagen filaments;

[0025] b. The frozen collagen filaments are extracted, dried and thermally stretched to obtain colored fibers of ultra-high molecular weight polyethylene.

[0026] In the invention, firstly, the organic pigment solution and the ultra-high molecular weight polyethylene fiber spinning stock solution are blended and extruded in a twin-screw extruder, and then spun to form jelly collagen filaments. Wherein, the organic pigment solution used is a mixed liquid of organic pigment and solvent. In order to ensure that no pigment pyrolysis occurs during fiber coloring, the heat-resistant temperature of the organic pigment used in the present invention is...

Embodiment 1

[0052] ① "Preparation of ultra-high molecular weight polyethylene solution

[0053] Add 8kg of ultra-high molecular weight polyethylene powder, 1192kg of white oil, 240g of antioxidant B225240g and 905g of emulsifier FLUFDOLW into the dissolution kettle, set the initial temperature of the dissolution kettle to 60-70°C, the stirring rate to 65-70 rpm, and the heating rate to 0.73-0.82°C / min, raise the temperature of the mixed solution from 60-70°C to 158°C, keep it warm and stir for 1h, put it in the solution tank, and place it at room temperature for 36-48h.

[0054] ② "Preparation of ultra-high molecular weight polyethylene swelling liquid

[0055] Add 65kg of ultra-high molecular weight polyethylene powder and 338kg of white oil into the dissolution kettle, set the initial temperature of the dissolution kettle to 60-70°C, the stirring rate to 65-70 rpm, and the heating rate to 0.37-0.46°C / min to make the mixing The liquid temperature is raised from 60 to 70°C to 115°C, kept...

Embodiment 2

[0066] ① "Preparation of ultra-high molecular weight polyethylene solution

[0067] Add 8kg of ultra-high molecular weight polyethylene powder, 1192kg of white oil, 240g of antioxidant B225240g and 905g of emulsifier FLUFDOLW into the dissolution kettle, set the initial temperature of the dissolution kettle to 60-70°C, the stirring rate to 65-70 rpm, and the heating rate to 0.73-0.82°C / min, raise the temperature of the mixed solution from 60-70°C to 158°C, keep it warm and stir for 1h, put it in the solution tank, and place it at room temperature for 36-48h.

[0068] ② "Preparation of ultra-high molecular weight polyethylene swelling liquid

[0069] Put 50kg of ultra-high molecular weight polyethylene powder and 353kg of white oil into the dissolution kettle, set the initial temperature of the dissolution kettle to 60-70°C, the stirring rate to 65-70 rpm, and the heating rate to 0.37-0.46°C / min to make the mixing The liquid temperature is raised from 60 to 70°C to 115°C, kept...

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Abstract

The invention provides a making method of ultrahigh molecular weight polyethylene colored fibers. The method is characterized in that an organic pigment solution and an ultrahigh molecular weight polyethylene fiber spinning stock solution undergo blending extrusion in a double screw extruder, the internal temperature of the double screw extruder is high, and a spinning stock solution and organic pigment solution mixture is always in a flow state, so solidification and residual of the organic pigment in the double screw extruder are prevented, pollution of the organic pigment to a spinning device is effectively avoided, and the cleaning difficulty of the spinning device is reduced. The pigment is an organic pigment, and has good intersolubility with the spinning stock solution, so the colored fibers made in the invention have uniform color.

Description

technical field [0001] The invention belongs to the field of ultra-high molecular weight polyethylene fibers, and in particular relates to a preparation method of ultra-high molecular weight polyethylene colored fibers. Background technique [0002] Ultra-high molecular weight polyethylene fiber is a kind of fiber prepared by gel spinning method of polyethylene with a molecular weight of more than 1 million. It has the advantages of high strength, high modulus, high crystallinity, low density and good weather resistance. It is widely used It is used in military, aerospace, marine ships, sports and protective products (bulletproof, stab-proof, cut-proof) and other fields. [0003] Due to the dense structure of ultra-high molecular weight polyethylene fibers, stable chemical properties, high chemical inertness, and no reactive groups in the molecular structure, traditional fiber coloring methods, such as carrier coloring, high-temperature coloring, It is difficult to implemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/04
Inventor 包剑峰王景景刘耀信王冬峰封卫星
Owner 杭州翔胜新材料有限公司
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